可见光响应Cr，N-共掺杂钛酸盐纳米管的水热法合成及表征  

SYNTHESIS AND CHARATERIZATION OF Cr, N-CODOPED TITANATE NANOTUBES WITH VISIBLE LIGHT RESPONSE

作　　者：于爱敏[1] 沈雯雯[2] 苗双[1] 孙晓红[1] 章福祥[1] 关乃佳[1] 

机构地区：[1]南开大学化学学院新催化材料科学研究所,天津300071 [2]郑州大学化学系,河南郑州450000

出　　处：《石油学报（石油加工）》2008年第B10期245-248,共4页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划（973计划）（2003CB615801）、国家自然科学基金项目（20573059和20603019）资助

摘　　要：以低温溶剂热法合成的Cr，N-共掺杂的TiO2为前驱体，采用水热法合成了可见光响应Cr，N-共掺杂钛酸盐纳米管；采用XRD、TEM、BET等手段对其结构进行了表征，并采用XPS、UV-vis等手段对Cr、N的存在方式和样品的可见光响应进行了测定。结果表明，采用这种方法合成的可见光响应Cr，N-共掺杂钛酸盐纳米管具有6～7nm的均-孔径和较大的比表面积（400m2／g），并且具有钛酸盐的典型结构特征；Cr和N分别以Cr（Ⅲ）和O-Ti—N的状态存在；合成的样品具有比离子交换法和未交换样品更强的可见光响应。Cr, N-codoped tiatanate nanotubes with visible-light response were synthesized by hydrothermal process by using Cr,N-codoped TiO2 as precursor. The as-synthesized sample was characterized by XRD, TEM, BET, XPS and UV-vis to obtain the physical properties, the state of the Cr and N and the intensity of visible light response. It is confirmed from the XRD, TEM, BET results that the as-synthesized sample showed high quality uniform pore size of 10 nm and high BET surface of 400 m2/g. The result of the XPS showed the Cr presented as Cr（ Ⅲ ） meanwhile the N presented as O^Ti-N in the titanate nanotubes. From the UV-vis spectra, it was detected that the Cr,N-codoped tiatanate nanotubes showed higher visible-light response than that of the Cr exchanged titanate nanotuhes.

关 键 词：可见光响应 CR N-共掺杂 钛酸盐 纳米管 

分 类 号：TQ164.6[化学工程—高温制品工业] S151.93[农业科学—土壤学]